Brd Precision Fridg/Frzr Size 1ct Brd Precision Fridg/Frzr Therm Fridge thermometer with wide temperature range and food safe indicator for accurately monitoring fridge or freezer temperature Easy to read temperature gauge with bold graphics and quick reference temperature guide Durable stainless steel construction with shatterproof industrial grade plastic lens resists cracking, scratching, breaking, or staining Tested and certified by NSF (National Sanitation Foundation)